CN100563112C - Digital multimedia broadcast receiver and the method that is used to reproduce digital multimedia data - Google Patents
Digital multimedia broadcast receiver and the method that is used to reproduce digital multimedia data Download PDFInfo
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- CN100563112C CN100563112C CNB2003101202996A CN200310120299A CN100563112C CN 100563112 C CN100563112 C CN 100563112C CN B2003101202996 A CNB2003101202996 A CN B2003101202996A CN 200310120299 A CN200310120299 A CN 200310120299A CN 100563112 C CN100563112 C CN 100563112C
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/42615—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific demultiplexing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/641—Multi-purpose receivers, e.g. for auxiliary information
Abstract
The present invention relates to a kind of receiving digital broadcast that is used for, relate in particular to the equipment and the method that are used for providing digital multimedia services at mixed type digital multimedia broadcast receiver with the access function of having ready conditions.Described mixed type digital multimedia broadcast receiver comprises the broadcast reception module.Described broadcast reception module comprises the receiving unit that is used to receive with demodulation digital broadcast data stream, be used for decomposing and extracting first demultiplexer of digital broadcast data and be used to detect the access information and use the access part of having ready conditions of the decrypts information selected data that detects of having ready conditions according to selected program multichannel.Described mixed type digital broadcasting transmitter also comprises decoder module.
Description
Technical field
The present invention relates to be used for the equipment and the method for receiving digital broadcast data, relate in particular to the equipment and the method that are used for providing digital multimedia services at digital multimedia broadcast receiver with the access function of having ready conditions.
Background technology
In DMB (DMB), by compressing such as the efficient compression algorithm of MPEG (Motion Picture Experts Group) algorithm digital broadcast data to a plurality of programs.The data of being compressed are by multiplexed and transponder or terrestrial repeaters are broadcasted as the digital broadcasting wave beam via satellite.In other words, digital broadcast data is divided into video and voice data, is compressed then.Data after the compression are divided into the predetermined transmitting element that is called transmission grouping (TP), and are multiplexed in the transport stream (TS) that will transmit.For the digital broadcast data of a plurality of programs is re-used in each transport stream.The user can select a program subsequently from multiplexing broadcast data.
Fig. 1 shows the structure of traditional digital multimedia broadcast receiver.Traditional digital multimedia broadcast receiver comprises antenna 10, DMB receiver module 20, decoder module 30, display part 50 and loud speaker 60.Basically be the DMB of charging broadcast, adopt traditional connecting system (CAS) to limit access (access) certain broadcast program.Each all is made of described DMB receiver module 20 and decoder module 30 single chip.Comprised that in decoder module 30 having ready conditions of the access service that is provided for having ready conditions insert part 33.
In traditional DMB receiver, the digital broadcast data that receives by antenna 10, the demodulator 21 by DMB receiver module 20 is rendered into original transmitted stream.The transport stream of reproducing is revised by error correcting section 23, and is input to decoder module 30.31 pairs of the TS demultiplexers of decoder module 30 comprise the transport stream multichannel decomposition of the multiplexing digital broadcast data that is used for a plurality of programs therein.Decoder module 30 is extracted and is comprised the digital broadcast data transmission grouping that is used for by user-selected program.At this moment, digital broadcast data inserts by scramble in order to have ready conditions, and is sent out subsequently.Having ready conditions of decoder module 30 inserts digital broadcast data and scrambling key descrambling that use smart card 40 produces or the digital broadcast data of deciphering scramble that part 33 receives scramble subsequently.The digital broadcast data of deciphering is decoded by the mpeg video decoder 35 and the mpeg audio decoder 37 of decoder module 30, and offers the user by display part 50 and loud speaker 60.
As mentioned above, in DMB, a plurality of programs are multiplexed in the single transport stream that will send.In traditional DMB receiver, all programs that are included in the transport stream that received by DMB receiver module 20 all are forwarded (transfer) to decoder module 30, and as mentioned above, each module all is made of single chip.Yet in general, sending in the data of chip chamber is to be undertaken by the PAD that consumes a large amount of power.Therefore when traditional DMB receiver is directly used the portable terminal with limited electric power resource, here when described traditional DMB receiver is applied to the portable terminal of limited power resource, may produce some problems, described DMB receiver will be forwarded to decoder module 30 by whole transport stream that DMB receiver module 20 receives.Therefore, thus being necessary to reduce to greatest extent the data volume that is forwarded to each module of DMB receiver reduces power consumption.
The digital data compression technology is fast-developing.Yet in traditional DMB receiver, decoder module 30 includes the decoded portion that condition inserts part 33 and is used to decompress.Change under the situation of (change) decoded portion only needing, the entire decoder module 30 that the condition that includes inserts part 33 all must be replaced.Like this, equally also need to develop a kind of be used to be independent of have ready conditions insert the technology that part 33 is changed decoded portion.
The latest development of digital technology has brought the digital integrated new trend of the functional boundary of having eliminated each digital product. in order to catch up with this new trend, carried out being provided for the research of receiving digital multimedia broadcastinging function for picture such as the portable terminal of cellular phone or personal digital assistant (PDA).Yet as mentioned above, traditional digital multimedia broadcast receiver has and can insert the structure of the digital broadcast data deciphering that part decomposes multichannel having ready conditions, and in decoded portion data is decoded subsequently.There is the problem of reproducing digital multimedia data rather than digital broadcast data in the decoder module of this traditional DMB receiver.For traditional DMB receiver is installed in portable terminal, need additional lsb decoder to assign to reproduce the not multi-medium data of scramble.Yet if a plurality of decoded portion are provided in having the portable terminal of limited power resource, this will cause power problem, and the feasible undersized portable terminal of formation that is difficult to.
Therefore, exist in the equipment of digital multimedia services and the demand of method are provided in the digital multimedia broadcast receiver with the access function of having ready conditions, wherein said equipment has farthest reduced the data volume that will transmit, and do not need to allow the change of replacing on a large scale.
Summary of the invention
Therefore, create the present invention solving the problems referred to above that take place in the prior art, and one object of the present invention is to be provided for to reduce between each module in digital multimedia broadcast receiver the equipment and the method for data traffic.
Another object of the present invention is to provide equipment and the method that comprises the energy receiving digital multimedia broadcastinging and reproduce the mixed type portable terminal of other multi-medium data.
Another object of the present invention is to provide equipment and the method that comprises the digital broadcasting transmitter that various multimedia services can be provided.
In order to realize above-mentioned purpose, according to embodiments of the invention, the equipment and the method that comprise the mixed type digital broadcasting transmitter that can reproduce digital multimedia data are provided, it comprises broadcast reception module and decoder module, broadcast reception module wherein comprises: be used to receive the receiving unit that flows with the demodulation digital broadcast data, a plurality of programs that are compressed coding and scramble are re-used and send in described digital broadcast data stream; First demultiplexer is used for the digital broadcast data of demodulation stream multichannel is decomposed and extracted corresponding to the digital broadcast data by user-selected program; With the access part of having ready conditions, be used to detect have ready conditions access information and of the digital broadcast data deciphering of the information of using detection to selecting.Described decoder module comprises: second demultiplexer, and be used for multichannel and decompose digital multimedia data stream, a plurality of digital multimedia datas that are compressed coding are re-used in the described digital multimedia data stream; And decoded portion, be used for decoding by the digital broadcast data of broadcast reception module output with from the digital multimedia data of second demultiplexer output.
Also provide a kind of mixed type multimedia broadcast receiver according to embodiments of the invention, comprise: receiving unit, be used for receiving digital broadcast data stream, be used for the digital broadcast data grouping of a plurality of programs and the access information of having ready conditions therein and divide into groups to be re-used and to send; First demultiplexer is used for separating have ready conditions access information grouping and the digital broadcast data grouping that is used for user-selected program from the digital broadcast data stream that receives; With the access part of having ready conditions, be used to detect from have ready conditions access information and the use of the access information grouping of the having ready conditions digital broadcast data packet deciphering of access information of having ready conditions to separating.Described mixed type multimedia broadcast receiver also comprises second demultiplexer, be used to receive digital multimedia data stream and therefrom separating audio grouping and video packets, the audio packet and the video packets that are compressed coding in described digital multimedia data stream are re-used; And decoded portion, be used for to the digital broadcast data grouping that inserts part output from having ready conditions with from the audio packet and the video packets decoding of second demultiplexer output, receiving unit wherein, first demultiplexer and having ready conditions inserts that part is formed in first integrated circuit (IC) chip and second demultiplexer and decoded portion are formed in second integrated circuit (IC) chip.
According to embodiments of the invention, the equipment that is used to handle digital broadcast data also is provided, it comprises: receiving unit, be used for receiving and demodulation digital broadcast data stream, in described digital broadcast data stream, be used for the digital broadcast data grouping of a plurality of programs and the access information of having ready conditions and divide into groups to be re-used and to transmit; Error correcting section is used for being corrected in the mistake of the digital broadcast data stream of demodulation; Demultiplexer is used for separating have ready conditions access information grouping and the digital broadcast data grouping that is used for user-selected program from the digital broadcast data stream of demodulation; With the access part of having ready conditions, be used for detecting have ready conditions access information and the described digital broadcast data packet deciphering of access information of having ready conditions of use to separating from the access information grouping of having ready conditions, wherein said equipment is formed on the single integrated circuit (IC) chip.
And, to achieve these goals, according to embodiments of the invention, a kind of method is provided, and the mixed type digital broadcasting transmitter of decoder module that is used for comprising therein the broadcast reception module that is used for handling digital broadcast data and is used for handling the numerical data of compressed encoding provides digital multimedia services.Described method comprises the following steps: at broadcast reception module receiving digital broadcast data stream, a plurality ofly therein is re-used by the program of scramble and the access information of having ready conditions and transmits; From the digital broadcast data stream that the broadcast reception module receives, separate have ready conditions access information and of the digital broadcast data deciphering of digital broadcast data and use visit information with good conditionsi that are used for user-selected program to separating; In the digital broadcast data decoding of decoder module to importing from the broadcast reception module; Reception digital multimedia data stream, the voice data and the video data of compressed encoding are re-used in decoder module in described digital multimedia data stream; With digital multimedia data stream multichannel is decomposed with separating audio data and video data and voice data and video data decoding in decoder module to separating.
Description of drawings
Detailed description with reference to the accompanying drawings will make above-mentioned and other purposes of the present invention, feature and advantage more obvious, wherein
Fig. 1 shows the block diagram of the example structure of traditional digital multimedia broadcast receiver;
Fig. 2 illustrates the block diagram of the example structure of mixed type digital multimedia broadcast receiver according to an embodiment of the invention;
Fig. 3 illustrates the flow chart that reproduces the processing of digital multimedia data according to an embodiment of the invention in the mixed type digital multimedia broadcast receiver.
Embodiment
After this with reference to the description of drawings embodiments of the invention.In the accompanying drawings, similar elements though describe in different accompanying drawings, will be represented with identical Reference numeral.And, in the explanation of the present invention below, when it may make that theme of the present invention is unclear, with the detailed description of omitting to the structure of known function and introducing.
Fig. 2 shows the block diagram of the example structure of mixed type digital multimedia broadcast receiver according to an embodiment of the invention.After this, with reference to Fig. 2 the structure and the operation of mixed type digital multimedia broadcast receiver are elaborated.
Mixed type digital multimedia broadcast receiver among Fig. 2 comprises antenna 210, broadcast reception module 220, decoder module 230, multi-media module 260, display part 241 and loud speaker 243.
221 pairs of digital broadcasting wave beams that receive by antenna 210 of demodulator amplify.After frequency inverted, 221 pairs of waveform shaping signals of demodulator (shapes) and demodulation are to reproduce original transmitted stream.And demodulator 221 extracts the transport stream of particular channel, is play from demodulated transport stream by user selected program on described channel, and demodulator 221 also outputs to error correcting section 223 to the transport stream of extracting.Any wrong error correction in 223 pairs of transport stream of error correcting section.
Provide digital multimedia data stream by multi-media module 260.Though Shuo Ming embodiments of the invention are based on the supposition that multi-media module 260 comprises CDMA receiver module 261, multimedia game module 263 and digital music module 265 here, in multi-media module 260, can be changed to getting rid of certain module or comprising that any other module is to provide digital multimedia services.CDMA module 261 provides the data such as Music on Demand (MOD) or video request program (VOD) that receive by mobile communications network.Multimedia game module 263 provides the multimedia game data.Described digital music module 265 provides for the useful digital music data of musical instruments such as singing machine (singing machine).
235 pairs of Video Decoder 233 and audio decoders be from the data of TS demultiplexer 231 outputs with from the data decode of broadcast reception module 220 outputs, and decoded data are outputed to display part 241 and loud speaker 243 respectively.Data and program that smart card 250 storages are used to decipher conditional access code.Smart card 250 receives data that insert part 227 from having ready conditions and the data that send to the access portion 227 of having ready conditions by unshowned in the drawings intelligent card interface.
Fig. 3 illustrates the flow chart that reproduces the processing of digital multimedia data according to an embodiment of the invention in the mixed type digital multimedia broadcast receiver.After this, will be used to provide various digital multimedia services, comprise the method for digital broadcasting referring to figs. 2 and 3 describing in detail in the digital multimedia broadcast receiver.
In step 301, the DMB receiver determines whether the request to receiving digital multimedia broadcastinging from the user.If there is such request, DMB receiver execution in step 303 then.In step 303, the DMB receiver drives broadcast reception module 220, to handle digital broadcast data and execution in step 305.
In step 305, the DMB receiver is by antenna 210 receiving digital broadcast ripples.Demodulator 221 amplifier digital broadcast waves.After frequency inverted, 221 pairs of signal beam shapings of decoder and demodulation are to reproduce original transmitted stream.Demodulator 221 extracts the transport stream of particular channel, is sent by user selected program on described channel, and demodulator 221 also outputs to error correcting section 223 to the transport stream of extracting.In step 307, any signal error error correction in the transport stream of 223 pairs of reproductions of error correcting section.
In step 309, TS demultiplexer 225 separates program correlation table (PAT) transmission grouping and analyzes this grouping from the transport stream of error correction.The described program correlation table of whole inventory of control information that comprises all programs is almost always entrained by the grouping with packet ID (PID)=0.In step 311, the PID that TS demultiplexer 225 detects corresponding to the program chart (PMT) of user-selected program.In step 313, the PID that 225 uses of TS demultiplexer detect isolates the transmission grouping corresponding to selected program from transport stream, and a grouping that separates is offered the access part 227 of having ready conditions.These are the digital broadcast datas of the selected program of structure corresponding to transmission of selected program grouping, and by the scramble access that is used to have ready conditions.
Competency for operation (Entitlement) control messages (ECM) and qualification authentication message (EMM) produce the scrambling key of the transmission grouping that is used for the descrambling scramble.ECM comprises program attribute information and ECM grouping, and EMM comprises the contract information of each user and EMM grouping.The video of ECM and EMM message and scramble and the common transmission of the transmission of voice data grouping.
In step 323, the EMM of extraction and ECM information are forwarded to smart card 250.In step 325, smart card 250 produces scrambling key based on described EMM and ECM information, and described scrambling key is passed out to the access part 227 of having ready conditions.
In step 327, condition inserts scrambling key the have ready conditions access code deciphering to corresponding to the transmission of selected program divide into groups of descrambler 228 usefulness of part 227 from smart card 250 inputs.Then, the digital broadcast data of being deciphered is imported into decoder module 230.
In step 329, the Video Decoder 233 of decoder module 230 and audio decoder 235 are decoded to the video data and the voice data of digital broadcast data respectively.In step 331, decoded video data and voice data are exported by display part 241 and loud speaker 243 respectively.If comprised the additional data such as caption data in digital broadcast data, it will be decoded by the additional data decoder (not shown), and by display part 241 outputs.
In step 301, if not from user's the request to receiving digital multimedia broadcastinging, then DMB receiver execution in step 333, and will determine whether to exist the request of reproducing digital multimedia data.In other words, the TS demultiplexer 231 of decoder module 230 determines whether to have imported digital multimedia data from multi-media module 260.Though top embodiment has illustrated a kind of equipment and method, the DMB receiver determines whether receiver is requested therein, determine whether receiver is requested to reproduce digital multimedia data after reproducing DMB, the order of apparent definite two requests can be put upside down for the staff in present technique field.And, can also be revised as the DMB receiver independent and while receiving digital multimedia broadcastinging and reproduction digital multimedia data.
If determine that in step 333 digital multimedia data is not transfused to, the DMB receiver will be got back to the wait state of step 301.If imported digital multimedia data, then the DMB receiver is with execution in step 335.In step 335, TS demultiplexer 231 decomposes for the input data multiplex, and the video of separation multiplexing and voice data.By step 329 to 331, the data of separation will be provided for the user.
Though the preferred embodiments of the present invention are used to illustrative purposes, those skilled in the art is to be understood that and can carries out various changes under the situation that does not break away from the scope and spirit of being announced by the claims that comprise the four corner that is equal to of the present invention, increases and deletes.
As mentioned above, the present invention can provide DMB and other digital multimedia services in single terminal.And according to embodiments of the invention, the multimedia function of various reality can easily be attached in the mixed type multimedia broadcast receiver.Support to use the quantity of the parts of multimedia service by being used to of farthest reduce adding, might produce small-sized mixed type multimedia broadcast receiver.In addition, the present invention can reduce power consumption by the data traffic that reduces at chip chamber.
Claims (16)
1. the mixed type digital receiver of the digital multimedia data that is used to regenerate comprises:
The broadcast reception module comprises:
Receiving unit is used for receiving and demodulation digital broadcast data stream, and described digital broadcast data stream comprises a plurality of programs that are compressed coding and scramble multiplexing and that send;
First demodulation multiplexer is used for the digital broadcast data of described demodulation stream demultiplexing, and selects and extract corresponding to the digital broadcast data by user-selected program;
The access part of having ready conditions is used to detect the access information and use the digital broadcast data deciphering of information to selecting of described detection of having ready conditions; With
Decoder module comprises second demodulation multiplexer, is used for digital multimedia data stream demultiplexing, and described digital multimedia data stream comprises multiplexing a plurality of digital multimedia datas that are compressed coding; With
Decoded portion is used for digital broadcast data of exporting from described broadcast reception module and the digital multimedia data decoding of exporting from described second demodulation multiplexer,
Wherein, described digital multimedia data stream is the multimedia data stream of scramble not.
2. mixed type digital broadcasting transmitter as claimed in claim 1 also comprises the smart card that is used to receive described have ready conditions access information and generation scrambling key.
3. mixed type digital broadcasting transmitter as claimed in claim 1, wherein, the described access information of having ready conditions comprises program information and subscriber management information.
4. mixed type digital broadcasting transmitter as claimed in claim 2, wherein, described having ready conditions inserted part and received described scrambling key and to described digital broadcast data deciphering from described smart card.
5. mixed type digital broadcasting transmitter as claimed in claim 1, wherein, described digital multimedia data comprises voice data and video data.
6. mixed type digital broadcasting transmitter as claimed in claim 5, wherein, described second demodulation multiplexer extracts described voice data and video data from described digital multimedia data stream.
7. mixed type digital broadcasting transmitter as claimed in claim 1, wherein, each is made of described broadcast reception module and described decoder module single integrated circuit.
8. be used to reproduce the mixed type digital broadcasting transmitter of digital multimedia data, comprise:
Receiving unit is used for receiving digital broadcast data stream, and described digital broadcast data stream comprises the digital broadcast data grouping that is used for the multiplexing of a plurality of programs and sends and the access information grouping of having ready conditions;
First demodulation multiplexer is used for dividing into groups and the digital broadcast data grouping from the described access information of having ready conditions that is used for by user-selected program from the digital broadcast data flow point of described reception;
The access part of having ready conditions, be used for from the access information detection of packets of having ready conditions have ready conditions access information with use the described access information of having ready conditions to the described digital broadcast data deciphering that separates;
Second demodulation multiplexer is used to receive the digital multimedia data stream that comprises multiplexing audio packet that is compressed coding and video packets, and from described digital multimedia data flow point from described audio packet and described video packets; With
Decoded portion is used for from the described digital broadcasting grouping that inserts part output and from the audio packet and the video packets decoding of described second demodulation multiplexer output of having ready conditions,
Wherein, described digital multimedia data stream is the multimedia data stream of scramble not.
9. mixed type digital broadcasting transmitter as claimed in claim 8 also comprises the smart card that is used to receive described have ready conditions access information and generation scrambling key.
10. mixed type digital broadcasting transmitter as claimed in claim 8, wherein, the described access information of having ready conditions comprises program information and subscriber management information.
11. mixed type digital broadcasting transmitter as claimed in claim 9, wherein, described having ready conditions inserted part and received described scrambling key and to described digital broadcast data deciphering from described smart card.
12. mixed type digital broadcasting transmitter as claimed in claim 8, wherein, described receiving unit, first demodulation multiplexer and the access part of having ready conditions are made of first integrated circuit (IC) chip, and second demodulation multiplexer and decoded portion are made of second integrated circuit (IC) chip.
13. method that is used for providing digital multimedia services at the mixed type digital broadcasting transmitter that comprises broadcast reception module and decoder module, described broadcast reception module is used to handle digital broadcast data, and described decoder module is used to handle the numerical data of compressed encoding, and described method comprises the following steps:
Receive the digital broadcast data stream of the program of a plurality of scrambles that comprise demultiplexing and forwarding and the access information of having ready conditions in the broadcast reception module;
From the described digital broadcast data flow point that receives in described broadcast reception module from the described access information of having ready conditions that is used for user-selected program with digital broadcast data and use the described access information of having ready conditions to the described datacast data deciphering that separates;
Receive the voice data of the compressed encoding that comprises demultiplexing and the digital multimedia data stream of video data in described decoder module;
In described decoder module to described digital multimedia data stream demultiplexing separating described voice data and described video data and to described voice data and described video data decoding,
Wherein, described digital multimedia data stream is the multimedia data stream of scramble not.
14. method as claimed in claim 13 also comprises the following steps:
Determine whether request to receiving digital broadcast from the user; With
When receiving described request, drive described broadcast reception module and receive described digital broadcast data stream.
15. method as claimed in claim 13, wherein,
The described access information of having ready conditions comprises program information and subscriber management information.
16. method as claimed in claim 13 also comprises the following steps:
Provide the described access information of having ready conditions from described broadcast reception module to smart card;
Use the described access information of having ready conditions to produce scrambling key at described smart card; With
Provide the scrambling key that produces by described smart card to decipher to described broadcast reception module with digital broadcast data to described separation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR59555/03 | 2003-08-27 | ||
| KR59555/2003 | 2003-08-27 | ||
| KR1020030059555A KR100547810B1 (en) | 2003-08-27 | 2003-08-27 | Digital multimedia broadcasting receiving device and method capable of playing digital multimedia data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1592126A CN1592126A (en) | 2005-03-09 |
| CN100563112C true CN100563112C (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101202996A Expired - Fee Related CN100563112C (en) | 2003-08-27 | 2003-12-12 | Digital multimedia broadcast receiver and the method that is used to reproduce digital multimedia data |
Country Status (5)
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| US (1) | US20050047448A1 (en) |
| EP (1) | EP1511296A1 (en) |
| JP (1) | JP3895741B2 (en) |
| KR (1) | KR100547810B1 (en) |
| CN (1) | CN100563112C (en) |
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| US8713702B2 (en) * | 2004-06-21 | 2014-04-29 | Intel Corporation | Digital media content distribution |
| KR100644401B1 (en) * | 2004-08-25 | 2006-11-10 | 주식회사 케이티프리텔 | Digital Multimedia Broadcasting watching method using direct input of DMB channel number in terminal, and Apparatus there-of |
| KR100735280B1 (en) * | 2005-06-16 | 2007-07-03 | 삼성전자주식회사 | Digital multimedia broadcastingdmb system and conditional access method for restricting of dmb watching in regional |
| US20070028271A1 (en) * | 2005-07-26 | 2007-02-01 | Samsung Electronics Co., Ltd. | Apparatus for receiving digital multimedia broadcasting and method for outputting audio using the same |
| EP1758400A3 (en) * | 2005-08-25 | 2008-07-30 | Samsung Electronics Co.,Ltd. | Mobile communication terminal and method for reproducing digital broadcasting |
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| EP1511296A1 (en) | 2005-03-02 |
| US20050047448A1 (en) | 2005-03-03 |
| JP3895741B2 (en) | 2007-03-22 |
| KR100547810B1 (en) | 2006-01-31 |
| KR20050022936A (en) | 2005-03-09 |
| JP2005073235A (en) | 2005-03-17 |
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